DTC 84

Diagnostic Chart:

Wiring Diagram:

The brake switch is normally closed supplying 12 volts to the PCM at terminal J3E05 when the key is on and brake off.

INFORMATION FLAG PARAMETERS

Info. Flag 84 is set when the PCM has detected the following conditions twice per ignition cycle.

^ Vehicle has cycled five times from 0-60 Km/h (0-37 mph).

^ No voltage has been seen at PCM terminal J3E5 (Circuit 86).



TEST DESCRIPTION

Numbered steps below refer to numbered steps on chart.


1. A ground in Circuits 350a, 350b or 350c will cause the 5 Amp Cruise fuse to fail. If the fuse fails Info. Flag 84 will be set and the cruise system will not operate if equipped.

2. If Circuit 300 is open Info. Flag 84 will be set. This test checks Circuit 300 for opens.

3. An open in Circuit 350a will cause Info. Flag 84 to set. This step checks Circuit 350a for opens.

4. A switch that is out of adjustment or is failed open will cause Info. Flag 84 to be set. This step checks for correct switch operation.

5. If Circuits 86b or 86 are open Info. Flag 84 will be set. This step indicates an open Circuit 86b/86 or a faulty PCM.

DIAGNOSTIC AIDS

When attempting to diagnose an intermittent problem use the Scan tool* to review supplemental diagnostic information. The supplemental data can be used to duplicate a problem.

* Select MALF History from Scan tool TCM menu.


Check the tightness of the female terminal grip with a spare male terminal.